Home / 13,917.12-19,206.18-7,629.72

Finding the Fourth Proportional to 13,917.12, 19,206.18 and 7,629.72

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Solution

The fourth proportional to 13,917.12, 19,206.18 and 7,629.72 is: 10,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.12 : 19,206.18 = 7,629.72 : x
  2. Step 2: Convert to fraction form
    13,917.12/19,206.18 = 7,629.72/x
  3. Step 3: Cross multiply
    13,917.12x = 19,206.18 × 7,629.72
  4. Step 4: Simplify right side
    13,917.12x = 146,537,775.67
  5. Step 5: Solve for x
    x = 146,537,775.67/13,917.12
  6. Step 6: Final answer
    x = 10,529.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.